add lunar client

exprs/lunar-client.nix

@@ -0,0 +1,40 @@
+{
+  appimageTools,
+  fetchurl,
+  lib,
+  makeWrapper,
+}: let
+  pname = "lunar-client";
+  version = "3.2.0";
+
+  src = fetchurl {
+    url = "https://launcherupdates.lunarclientcdn.com/Lunar%20Client-${version}.AppImage";
+    hash = "sha256-Y9SjcVQ+7tmX6vKdYuD4JtTDJNmMKliEN5Yl41/WJjs=";
+  };
+
+  appimageContents = appimageTools.extract {inherit pname version src;};
+in
+  appimageTools.wrapType2 rec {
+    inherit pname version src;
+
+    extraInstallCommands = ''
+      mv $out/bin/{${pname}-${version},${pname}}
+      source "${makeWrapper}/nix-support/setup-hook"
+      wrapProgram $out/bin/${pname} \
+        --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--ozone-platform-hint=auto --enable-features=WaylandWindowDecorations}}"
+      install -Dm444 ${appimageContents}/launcher.desktop $out/share/applications/lunar-client.desktop
+      install -Dm444 ${appimageContents}/launcher.png $out/share/pixmaps/lunar-client.png
+      substituteInPlace $out/share/applications/lunar-client.desktop \
+        --replace 'Exec=AppRun --no-sandbox %U' 'Exec=lunar-client' \
+        --replace 'Icon=launcher' 'Icon=lunar-client'
+    '';
+
+    meta = with lib; {
+      description = "Free Minecraft client with mods, cosmetics, and performance boost.";
+      homepage = "https://www.lunarclient.com/";
+      license = with licenses; [mit]; # colon 3
+      mainProgram = "lunar-client";
+      maintainers = with maintainers; [zyansheep Technical27 surfaceflinger];
+      platforms = ["x86_64-linux"];
+    };
+  }

exprs/overlay.nix

@@ -7,17 +7,5 @@ final: prev: {
     meta.knownVulnerabilities = []; # NixOS/nixpkgs#273611
   });
 
-  aseprite = prev.aseprite.overrideAttrs (old: rec {
-    version = "1.3.2";
-
-    src = prev.fetchFromGitHub {
-      owner = "aseprite";
-      repo = "aseprite";
-      rev = "v${version}";
-      fetchSubmodules = true;
-      hash = "sha256-8PXqMDf2ATxmtFqyZlGip+DhGrdK8M6Ztte7fGH6Fmo=";
-    };
-
-    meta.license = prev.lib.licenses.mit; # removes unfree error
-  });
+  lunar-client = prev.callPackage ./lunar-client.nix {};
 }

systems/desktop.nix

@@ -137,6 +137,7 @@ in {
       gnome.gnome-calculator
       jetbrains.idea-ultimate
       libreoffice-fresh
+      lunar-client
       mate.eom
       mold
       mpv